I don't do the operation myself but I'm very familiar with it, and without doubt if I were going to have weight loss surgery, or refer someone for
it, I'd choose lap band over bypass, for
every possible reason: it's much safer, by far. The weight loss is not as rapid, but over time it's the same; in fact, there's more chance of long-term weight gain with bypass than with banding. It's adjustable; it's easily removeable, should that be necessary. It's cheaper.